A tiltrotor is a type of vertical takeoff and landing (VTOL) aircraft that convert from vertical to horizontal flight by rotating propellers or ducted fans from horizontal positions like conventional aircraft propellers to vertical like a helicopter's rotors.Leishman 2006, p.328
Tiltrotor aircraft
| Aerocopter Sarus || US || Mono rotor || Commuter || || Project || 0 || Streep || Abe. " The Personal Tilt-Rotor." Popular Science || Vol. 274, no. 5, May 2009. |- | American Dynamics AD-150 || US || Twin fans || Scout UAV || || Project || 0 || USMC Tier III VUAS submission. Ducted fans.Maryland Funds Work On VTOL Unmanned Aircraft Aviation Week & Space Technology, 11 February 2010. |- | AgustaWestland AW609 || Italy || Twin rotor || Civil transport || || Prototype || || Originally Bell-Augusta BA609. |- | AgustaWestland Project Zero || Italy || Twin fans || Experimental || || Prototype || 1 || Flight test|Hybrid propulsion. Ducted fans."Project Zero: Half plane, half helicopter" BBC News, 20 June 2013. |- | Baldwin MTR-SD || US || Mono rotor || Experimental || || Prototype || 1 || Small radio-control mono tiltrotor testbed."Persistence Pays Off For Mono Tiltrotor Inventor" || Aviation Week 171.16, October 26, 2009, page 64 |- | Bell XV-3 || US || Twin rotor || Experimental || || Prototype || 2 || Originally designated XH-33.Maisel 2000. Page 14. |- | Bell XV-15 || US || Twin rotor || Experimental || || Prototype || 2 || Developed into V-22 Osprey.Maisel 2000. Page 70. |- | Bell X-22 || US || Quad fans || Experimental || || Prototype || 2 || 4 tilting ducted fans powered by 4 turboshaft engines |- | Bell Boeing V-22 Osprey || US || Twin rotor || Military transport || || Production || || Norton 2004 |- | Bell V-247 Vigilant || US || || Multirole UAV || || Project || 0 || Bell unveils V-247 Vigilant unmanned tiltrotor - Flightglobal.com, 22 September 2016 |- | Bell MV-75 Cheyenne II || US || || Heavy transport || || Prototype || || Intended for both commuter and military roles.Bell unveils V-280 Valor mock-up - Flightglobal.com, 21 October 2013 |- | Bell Eagle Eye || US || Twin rotor || Scout UAV || || Prototype || || New search for VTOL UAVs may resurrect Bell tiltrotor - Flightglobal.com, 21 January 2016 |- | Bell Boeing Quad TiltRotor || US || Quad rotor || Heavy transport || || Project || 0 || Several redesigns."Heavy duty: US Army backs tiltrotor as future battlefield airlifter". Flight International, 14 January 2008. |- | Boeing Advanced Civil Tiltrotor || US || Twin rotor || Civil transport || || Project || 0 || Concept only.https://www.secretprojects.co.uk/threads/us-joint-heavy-lift.2765/post-31640 |- | Colugo Systems ARCopter || Israel || Quad frame || Scout UAV || || - || || Tilting quadcopter frame. |- | CTA Heliconair HC-I Convertiplano || Brazil || || Experimental || || Prototype || 1 || "Focke Convertiplane".Flight, 1955, p.214 |- | Curtiss-Wright X-100 || US || Twin rotor || Experimental || || Prototype || 1 || Testbed for radial force principle. Developed into X-19. |- | Curtiss-Wright X-19 || US || Quad rotor || Transport testbed || || - || 2 || Jenkins 2004, p.40 |- | Doak VZ-4 || US || Twin rotor || Experimental || || Prototype || 1 || U.S. Army VTOL research project. Ducted fans.Stevenson, Roy, "Doak's One-Off," Aviation History, July 2014, pp. 14–15. |- | Dornier Do 29 || Germany || Twin rotor || Experimental || || Prototype || 2 || Utility VTOL testbed. Inverted rotors.Luftwaffe: Projekte: Do 29. In: Geschichte der Luftwaffe. Bundeswehr. Accessed 2009-06-15. |- | Dufaux triplane || Switzerland || || Experimental || || - || || Central rotor and engine. Built but could not fly.Taylor 1989, p.347. |- | FLUTR model 1 || Germany || || Flying car || 2018 || Project || 0 || |- | Focke-Achgelis Fa 269 || Germany || Twin rotor || Fighter || || - || || Inverted rotors.Lepage 2009, p.385 |- | IAI Panther || Israel || Trirotor || Recon UAV || || Prototype || || Third rotor for lift only. |- | IAI/Hankuk FE-Panther || Israel, South Korea || Trirotor || Recon UAV || || Prototype || || Improved Panther with separate engine for horizontal flight. |- | Mil Mi-30 || USSR || || Transport || || Project || 0 || "Vintoplan". |- | Nord Aviation N 500 Cadet || France || || Experimental || || Prototype || || Ducted fans.Taylor 1989, p.33 |- | Russian Helicopters Albatross || Russia || || UAV || || Project || 0 || In development; hybrid tiltrotor-tiltwing. |- | Transcendental Model 1-G || US || Twin rotor || Experimental || || Prototype || || Single engine.Maisel 2000. Page 8. |- | Transcendental Model 2 || US || || Experimental || || - || || Improved Model 1.Maisel 2000. Page 11.
See also List of VTOL aircraft
References
Citations
Bibliography
Maisel, Martin D., Demo J. Giulianetti and Daniel C. Dugan. "The History of the XV-15 Tilt Rotor Research Aircraft: From Concept to Flight". Washington, D.C.: NASA History Division, 2000. Norton, Bill. Bell Boeing V-22 Osprey, Tiltrotor Tactical Transport. Earl Shilton, Leicester, UK: Midland Publishing, 2004.